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Figure 7
Cross-sectional EBSD images of the Bi2Te3 film BT-B. The different panels show the twin distribution at different regions along the prepared layer cross section. Yellow and red colours indicate the two twin orientations in the thin film, while cyan marks the single-crystalline BaF2 substrate. The shape of the interface between the two domains is found to be complicated with frequent vertical overlap of the two domains. Tilted domain boundaries are indicated by green arrows. The lower quality of these data as compared to the top view data is caused by strong charging of the insulating BaF2 substrate.

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